Examlex
Q8: The sunspot cycle is sometimes described as
Q17: The "Local Bubble" was probably created by
Q24: Star A is a main sequence star
Q40: Who first attempted to find our position
Q51: After stage 3 in star formation,the protostar
Q56: Extrasolar planets are placed in groups by
Q73: Due to absorption of shorter wavelengths by
Q74: Knowledge of a star's temperature and _
Q78: What is the typical age for a
Q88: About how many stars has the Hipparcos